The U.S. Secret Service has reviewed profanity-laced e-mails a Colorado Springs man sent Rep. Rhonda Fields two weeks ago, but it is not investigating any further, an official said Thursday.

One of the e-mails warns of an "overthrow of this government" if President Barack Obama "tries to take our guns."

Franklin Sain, 42, was arrested Friday for sending Fields, D-Aurora, harassing e-mails and suspicion of attempting to influence a public official, a felony. He told Denver police he sent her six e-mails filled with profanity and sexual and racial epithets and left similar voice mails between Feb. 13 and 15.

Among them was a message that read, "Do you actually think that Americans will put up with this ... I guarantee there is not enough law enforcement or military to stop an all out overthrow of this government if you or that ... President tries to take our guns. ... Guarantee we will make World War I and II look like child's play, many will die ... be prepared."

Bruce Ward, special agent in charge of the Secret Service in Denver, said the comments made about the president fell within Sain's free speech rights.

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